| LDA Studios Ltd | Education | 2026 |
| Leaky Shed Records Ltd | Wholesale & retail | 2026 |
| Legal Costs Solutions.Co.Uk Ltd | Professional & scientific | 2026 |
| Lendline Limited | Real estate | 1992 |
| LEO Mini Market (Blackpool) Ltd | Wholesale & retail | 2021 |
| Leo's Carpets Limited | Construction | 2011 |
| Lesley Worden Catering Services Ltd | Hospitality | 2019 |
| Levab Construction Ltd | Construction | 2023 |
| Lewis & Lola Properties Ltd | Real estate | 2022 |
| Leylaadem Ltd | Wholesale & retail | 2023 |
| Leyland Optical Limited | Wholesale & retail | 2019 |
| Liage Ltd | Wholesale & retail | 1998 |
| Life Quotes Online Ltd | Professional & scientific | 2008 |
| Lights Control Rigging Limited | Extraterritorial | 2014 |
| Lights Control Rigging Productions Ltd | Administrative & support | 2016 |
| Lights Control Rigging Studios Limited | Information & communication | 2016 |
| Limes Avenue Consulting Ltd | Professional & scientific | 2021 |
| Limitless Medical and Training Solutions Limited | Wholesale & retail | 2023 |
| Linden Group Limited | Real estate | 2017 |
| Line Above Limited | Arts & recreation | 2016 |
| Linthwaite Croft Management Company Limited | Households | 2026 |
| Lisam Property Group Limited | Real estate | 2025 |
| Little Angels (Phoenix) C.I.C. | Health & social care | 2018 |
| Little Meadow Hoddlesden Residents Management Company Limited | Households | 2026 |
| Little Meadow Residents Management Company Limited | Households | 2024 |
| Littlefair's Wood Finishing Products Ltd | Manufacturing | 2016 |
| LJ Trades Limited | Transport & logistics | 2026 |
| LLT2 Limited | Professional & scientific | 2014 |
| Local Recycling Group Limited | Wholesale & retail | 2024 |
| Lock & Key Estate Agents Ltd | Real estate | 2019 |
| Lolomix Ltd | Hospitality | 2025 |
| Long After Limited | Professional & scientific | 2007 |
| Longden Commercials Limited | Wholesale & retail | 2025 |
| Lord's Care Lancs Ltd | Administrative & support | 2021 |
| Louise Sloan Opticians Limited | Wholesale & retail | 2015 |
| Lounge 55 Ltd | Hospitality | 2025 |
| Love Local Today Ltd | Information & communication | 2014 |
| LS (GB) Limited | Extraterritorial | 2003 |
| Lucas Property Solutions NW Limited | Real estate | 2021 |
| Lucrative Business Limited | Health & social care | 1998 |
| Luigi & SON Ltd | Real estate | 2021 |
| Lunettes Opticians Limited | Health & social care | 1997 |
| Luther International Marketing Management Limited | Information & communication | 2026 |
| Luxe Tanning Hair & Beauty Limited | Other services | 2021 |
| LW Commerce Ltd | Wholesale & retail | 2026 |
| LW Hair and Beauty Ltd | Other services | 2025 |
| LWG Holdings Ltd | Real estate | 2019 |
| Lynette Harwood Associates Limited | Health & social care | 2013 |
| Lynwood Express Ltd | Wholesale & retail | 2025 |
| Lynwood Local Limited | Wholesale & retail | 2025 |
| M Atkinson Holdings Ltd | Construction | 2013 |
| M Atkinson Joinery Ltd | Construction | 2015 |
| M Atkinson Properties Ltd | Real estate | 2019 |
| M Business Solutions Limited | Professional & scientific | 2020 |
| M Cece Assistant Services Ltd | Administrative & support | 2021 |
| M J Ryan Eyecare Limited | Wholesale & retail | 2003 |
| M T Car Sales Limited | Transport & logistics | 2003 |
| M&Sproceedings Ltd | Wholesale & retail | 2025 |
| M-Tec Architectural Metalwork Limited | Extraterritorial | 2008 |
| M. & M. Accessories Limited | Wholesale & retail | 1983 |
| M.J. Hart Homes Limited | Construction | 2004 |
| M4 UK Fastfood Limited | Hospitality | 2025 |
| Macintosh Investments Ltd | Other services | 2013 |
| Mahwill Ltd | Construction | 2025 |
| Major Loss Limited | Financial services | 2016 |
| Makerfield Optical Limited | Health & social care | 2014 |
| Malcolm Graham Design Services Limited | Professional & scientific | 2023 |
| Malcolm Gray & Associates Limited | Wholesale & retail | 2011 |
| Malik Western Plastics Ltd | Manufacturing | 2002 |
| Malrie Properties Ltd | Real estate | 2023 |
| Manchester EYE and Cosmetic Clinic Limited | Administrative & support | 2006 |
| Mangiamo Tapas Ltd | Hospitality | 2020 |
| Manjanee Ltd | Hospitality | 2025 |
| Manoptic Limited | Wholesale & retail | 1950 |
| Mansfield Optical Limited | Wholesale & retail | 2021 |
| Marcus Walsh Limited | Real estate | 2007 |
| Marine Trade Solutions Limited | Professional & scientific | 2010 |
| Mark Blankstone Opticians Limited | Wholesale & retail | 1996 |
| Mark Clegg Structural Engineering Limited | Professional & scientific | 2017 |
| Mark Patterson Building and Landscaping Ltd | Construction | 2026 |
| Market Operations Limited | Real estate | 2012 |
| Marshmallows Limited | Education | 2001 |
| Martin Steels (Emsworth) Limited | Wholesale & retail | 2021 |
| Martin Steels Limited | Health & social care | 2000 |
| Martin Storey (Bungay) Limited | Health & social care | 2017 |
| Martin Storey Limited | Health & social care | 2006 |
| Marvis Multiline Ltd | Wholesale & retail | 2025 |
| Matheson Optometrists Ltd | Health & social care | 1999 |
| Matvienko Investments Limited | Real estate | 2017 |
| Maxi Fire & Security Group Ltd | Financial services | 2025 |
| Maxi Fire & Security Ltd | Administrative & support | 2019 |
| Maxi Fire and Security Holdings Ltd | Real estate | 2022 |
| Mayfield Pet Food Supplies Ltd | Wholesale & retail | 2025 |
| MBS Consultancy Ltd | Professional & scientific | 2011 |
| MC Property Investments (NW) Ltd | Real estate | 2025 |
| Mccracken Opticians Ltd | Health & social care | 2021 |
| Mcgregor Opticians Limited | Wholesale & retail | 2010 |
| Mcquade Eyecare Limited | Health & social care | 2011 |
| Meadow Head Properties Limited | Real estate | 2024 |
| Meadow View Estate Management Co. Limited | Households | 2016 |